基于双（2-羟基-1-萘醛）草酰二腙的高选择性荧光探针用于 Al，具有聚集诱导发射增强和凝胶性能。
A highly selective fluorescent probe for Al based on bis(2-hydroxy-1-naphthaldehyde) oxaloyldihydrazone with aggregation-induced emission enhancement and gel properties.
机构信息
College of GeoExploration Science and Technology, Jilin University, Changchun, PR China.
College of GeoExploration Science and Technology, Jilin University, Changchun, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Jan 5;224:117406. doi: 10.1016/j.saa.2019.117406. Epub 2019 Jul 19.
An efficient fluorescent probe, bis(2-hydroxy-1-naphthaldehyde) oxaloyldihydrazone (1), has been prepared for the selective sensing of Al over other common metal ions in water-containing media. The 1:1 stoichiometry of 1 and Al was determined from Job's plot and Benesti-Hildebrand plot. The binding constant was observed as 1.6×10M, and the limit of detection was found to be 0.36μM, which was far below the drinking water restriction of Al by EPA (the maximum allowable value is 7.4μM). In addition, the inherent AIEE features of 1 were observed upon addition of water to DMSO solution due to the restriction of the intramolecular motion, which makes the molecular conformations rigid and planar. Moreover, 1 could act as a novel gelator to form thermo-reversible supramolecular organogel with significant green emission in DMSO-HO (v/v, 9:1) solution.
一种高效的荧光探针，双（2-羟基-1-萘醛）草酰二腙（1），已被制备用于在含水介质中选择性地感测 Al 相对于其他常见金属离子。从作业图和本斯蒂-希尔德布兰德图确定了 1 和 Al 的 1:1 化学计量比。观察到结合常数为 1.6×10^M，检测限为 0.36μM，远低于 EPA 对 Al 的饮用水限制（最大允许值为 7.4μM）。此外，由于分子内运动的限制，当向 DMSO 溶液中加入水时，1 表现出固有的 AIEE 特征，这使得分子构象刚性和平面化。此外，1 可以作为一种新型凝胶剂，在 DMSO-HO（v/v，9:1）溶液中形成具有显著绿色发射的热可逆超分子有机凝胶。
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